Nghiên cứu dùng Plasma lạnh với khí Argon và Oxy diệt vi khuẩn trên bề mặt vật liệu=Disinfection of material surfaces using cold plasma with argon and oxygen: A study on bacterial inactivation

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Tác giả: Cao Đăng Lê, Thị Hồng Thuỷ Lê, Nguyên Vũ Ngô, Tường Long Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Công thương, 2024

Mô tả vật lý: tr.290-296

Bộ sưu tập: Metadata

ID: 475182

Thêm vào giỏ

Plasma lạnh được tạo ra trong môi trường điện áp cao giữa các điện cực ở nhiệt độ phòng và thành phần của nó phụ thuộc vào các khí chạy giữa các điện cực đó. Bài báo này đánh giá hiệu quả khử trùng của plasma lạnh tác dụng lên vi khuẩn trên những bề mặt phẳng. Sau đó, quy trình khử trùng được thử nghiệm trực tiếp trên bề mặt tiền polymer và đánh giá hiệu quả của phương pháp khử trùng này. sử dụng hai kiểu khí làm tác nhân diệt khuẩn, gồm: loại 100% Argon tinh khiết, hoặc 98% Argon kết hợp với 2% Oxy. Quy trình khử trùng bằng thiết bị đã được thử nghiệm trên 5 loài vi khuẩn khác nhau (Pseudomonas aeruginosa, Salmonella enterica, Escherichia coli, Enterococcus faecalis và Staphylococcus aureus). Sau đó, lặp lại quy trình trên tiền và đánh giá hiệu quả của plasma lạnh đối với hệ vi sinh vật trên bề mặt tiền. Kết quả rất tích cực với cả hai thiết lập khí đều mang lại hiệu suất cao lên đến 99,97% lượng vi khuẩn bị tiêu diệt. Nghiên cứu đã chứng minh được hiệu quả của quy trình khử trùng bằng plasma lạnh trên bề mặt phẳng và mở ra nhiều ứng dụng tiềm năng hơn của kỹ thuật khử trùng bề mặt, đặc biệt là tiền, trong tương lai.This study investigated the effectiveness of cold plasma as a surface disinfection method, focusing on its application to disinfect the surface of polymer banknotes. Cold plasma was generated at room temperature in a high-voltage environment between electrodes, with its composition varying based on the gases used. Two gas compositions - 100% pure argan and a mixture of 98% argon with 2% oxygen - were evaluated for their disinfection efficacy. The study tested cold plasma's bactericidal effects on five bacterial species (Pseudomonas aeruginosa, Salmonella enterica, Escherichia coli, Enterococcus faecalis, and Staphylococcus aureus) on flat surfaces and then extended testing to banknotes to assess its impact on banknote-associated microflora. Results showed a high disinfection efficiency, with up to 99.97% bacterial reduction in both gas settings. This study highlights cold plasma's potential as an effective disinfection tool for diverse surfaces, suggesting promising applications for currency sanitation and other surface disinfection needs.

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